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<div><a href="../index.html">Home</a> &gt;  <a href="index.html">utilities</a> &gt; ST_phi2d.m</div>

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<h1>ST_phi2d
</h1>

<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="box"><strong>Convert sediment grain size from phi to d (m)</strong></div>

<h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="box"><strong>function [d] = ST_phi2d(phi) </strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="fragment"><pre class="comment"> Convert sediment grain size from phi to d (m)

 function [d] = ST_phi2d(phi)

 DESCRIPTION:
    Convert a sediment grain size from phi to d (m)

 INPUT:
    phi: sediment grain size in phi scale

 OUTPUT:
    d: sediment grain size in m

 EXAMPLE USAGE
    d = ST_phi2d(2.5)

 Author(s):  
    Geoff Cowles (University of Massachusetts Dartmouth)

 Revision history
   
==============================================================================</pre></div>

<!-- crossreference -->
<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
This function calls:
<ul style="list-style-image:url(../matlabicon.gif)">
</ul>
This function is called by:
<ul style="list-style-image:url(../matlabicon.gif)">
<li><a href="ST_example.html" class="code" title="function ST_example">ST_example</a>	Example usage of Sediment Toolbox</li></ul>
<!-- crossreference -->



<h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="fragment"><pre>0001 <a name="_sub0" href="#_subfunctions" class="code">function [d] = ST_phi2d(phi)</a>
0002 <span class="comment">% Convert sediment grain size from phi to d (m)</span>
0003 <span class="comment">%</span>
0004 <span class="comment">% function [d] = ST_phi2d(phi)</span>
0005 <span class="comment">%</span>
0006 <span class="comment">% DESCRIPTION:</span>
0007 <span class="comment">%    Convert a sediment grain size from phi to d (m)</span>
0008 <span class="comment">%</span>
0009 <span class="comment">% INPUT:</span>
0010 <span class="comment">%    phi: sediment grain size in phi scale</span>
0011 <span class="comment">%</span>
0012 <span class="comment">% OUTPUT:</span>
0013 <span class="comment">%    d: sediment grain size in m</span>
0014 <span class="comment">%</span>
0015 <span class="comment">% EXAMPLE USAGE</span>
0016 <span class="comment">%    d = ST_phi2d(2.5)</span>
0017 <span class="comment">%</span>
0018 <span class="comment">% Author(s):</span>
0019 <span class="comment">%    Geoff Cowles (University of Massachusetts Dartmouth)</span>
0020 <span class="comment">%</span>
0021 <span class="comment">% Revision history</span>
0022 <span class="comment">%</span>
0023 <span class="comment">%==============================================================================</span>
0024 
0025 <span class="comment">%subname = 'ST_phid2';</span>
0026 <span class="comment">%fprintf('\n')</span>
0027 <span class="comment">%fprintf(['begin : ' subname '\n'])</span>
0028 
0029 <span class="comment">%------------------------------------------------------------------------------</span>
0030 <span class="comment">% calculate d and convert to m</span>
0031 <span class="comment">%------------------------------------------------------------------------------</span>
0032 
0033 d = 2^(-phi);
0034 d = d*.001;
0035 
0036 <span class="comment">%fprintf(['end   : ' subname '\n'])</span></pre></div>
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